Water collecting under drivers seat carpet

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My Name: CarlaC3

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Posts: 4
Joined: Sun Aug 15, 2021 2:33 pm
Model: C3 2009-2013, New shape (A51)
Year: 2011 (11)
Engine Size: 1.4
Fuel Type: Petrol
Mileage: 47000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: EP3-EP3C 1.4 Vti 16v
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Whilst hoovering my 2011 C3 a few weeks back, I noticed the carpet underneath the drivers seat and underneath the foot well of the rear passenger seat behind the driver, was absolutely sodden wet. After stuffing numerous towels under the carpet I managed to absorb a lot of the standing water, and got it a lot drier, but the problem keeps persisting and after a couple of weeks the water is coming back. We've had no severe downpours lately and the car hasn't been washed in a while, so I'm at a loss as to where the water is coming from. Any advice would be greatly appreciated, thank you
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My Name: C3driver52

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Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
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CarlaC3 wrote: Sun Aug 15, 2021 2:46 pm Whilst hoovering my 2011 C3 a few weeks back, I noticed the carpet underneath the drivers seat and underneath the foot well of the rear passenger seat behind the driver, was absolutely sodden wet. After stuffing numerous towels under the carpet I managed to absorb a lot of the standing water, and got it a lot drier, but the problem keeps persisting and after a couple of weeks the water is coming back. We've had no severe downpours lately and the car hasn't been washed in a while, so I'm at a loss as to where the water is coming from. Any advice would be greatly appreciated, thank you

Hi

Does yours have a sun roof? One that opens?
My Name: CarlaC3

Member
Posts: 4
Joined: Sun Aug 15, 2021 2:33 pm
Model: C3 2009-2013, New shape (A51)
Year: 2011 (11)
Engine Size: 1.4
Fuel Type: Petrol
Mileage: 47000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: EP3-EP3C 1.4 Vti 16v
Been thanked: 2 times

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Hi, no it doesn't have a sunroof, but it's a panoramic windscreen/roof
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My Name: Ozvtr

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Posts: 957
Joined: Wed Jul 10, 2019 3:31 am
Model: C3 2002-2005, Original shape model
Year: 2003 (53)
Engine Size: 1.4 (8v)
Fuel Type: Petrol
Mileage: 80000
Trim Level: Other
Gearbox: Automatic PRND
DPF: No
LHD or RHD: RHD
Engine name: TU3 (75 PS)
Location: Brisbane, Australia.
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I am not too familiar with the later shape of C3's so unfortunately I cant give you specifics.
Use a white paper towel and see if you can mop up some of the fluid. See if it has some sort of colour or if it's clear. If it has some sort of colour to it (like red) it might be coolant. In this case the heater matrix or connectors has gone. Do you need to frequently top up the coolant in the expansion tank?
If it is clear, it could be your air conditioner or rain water from outside. Have you been using your A/C a lot lately?
Typically the fresh air inlet and pollen filter are on the drivers side (RHD). You can remove and check the pollen filter and air inlet area below the filter. Look for water or what ever in there or muddy "tide marks".
Failing that, remove the windscreen wipers and all the plastic stuff at the base of the wind screen. This is known as the scuttle panel. Usually there are drain holes on either side for the rain water to run off. They can get blocked with leaves.
If the windscreen has ever been replaced the technicians may not have installed all the scuttle seals at all, or properly. Again, rainwater gets into the air inlet box where the pollen filter sits.

If you have had no rain, the problem is probably the the air con evaporator drain tube. The evaporator gets ice and condensation on it, which melts and forms water. This water is drained out of a tube in the bottom of the car. It can sometimes be a considerable amount of water. You will need to get under the car, find and unblock the tube. The tube is usually located at the base of the fire wall in approximately the center of the car. Directly below the air distribution box. It can get blocked with dirt, mud or bugs.
My Name: CarlaC3

Member
Posts: 4
Joined: Sun Aug 15, 2021 2:33 pm
Model: C3 2009-2013, New shape (A51)
Year: 2011 (11)
Engine Size: 1.4
Fuel Type: Petrol
Mileage: 47000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: EP3-EP3C 1.4 Vti 16v
Been thanked: 2 times

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Thank you so much for this advice, I'll check these options out. The water is clear
My Name: CarlaC3

Member
Posts: 4
Joined: Sun Aug 15, 2021 2:33 pm
Model: C3 2009-2013, New shape (A51)
Year: 2011 (11)
Engine Size: 1.4
Fuel Type: Petrol
Mileage: 47000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: EP3-EP3C 1.4 Vti 16v
Been thanked: 2 times

Post

Took the windscreen wipers and scuttle panel off. Found a lot of pine needles, leaves, mud and all sorts of gunk under there. Gave it a good clean out and managed to find the water drainage valve and it was completely packed with mud, hence, any water had no means of drainage. Gave it a good clean out, and poured water through, and it's now seeping out where it should do, under the car. Hopefully, this was the cause of the problem and wont happen again
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